Hi,
I try to apply clusterrandanalysis to time-frequency data I exported from
BESA.But I seem to have a problem with the specifications of neighbouring
electrodes.
After applying clusterrandanalysis I get several significant clusters in the
same time-frequency range in neighbouring electrodes, i.e. one cluster for
each electrode in that range. I assumed that they should be collected to one
one cluster if the effect is in the same range and region?
Here is what I tried:
elec = read_fcdc_elec('27mtg.sfp'); % the exported BESA coordinates
cfg=[];
cfg.statistic = 'depsamplesT';
cfg.alphathresh = 0.05;
cfg.makeclusters = 'yes';
cfg.clusterteststat = 'maxsum';
cfg.onetwo = 'twosided';
cfg.alpha = 0.05;
cfg.nranddraws = 1000;
cfg.channel = 'all';
cfg.neighbourdist = 0.04; % I also tried 0.05 with the same result
cfg.latency = 'all';
cfg.elec = elec;
[stat] = clusterrandanalysis(cfg,fileB,fileA);
I also tried the analysis with manually defined neighbours, but received the
same result.
I attached the elec variable with the coordinates.
Thank you very much for your help,
Stephan